Alcohol-flame intensifier



May 1, 1923.

A. M. RAWLS ALCOHOL FLAME INTENSIFIER Filed April 3. 1922 Patented May1, 1923.

UNIED STAT ARCHIE MARTIN RAWLS, or DIXON, I'IiLIno Is ALCOHO -FLAMINTEnsIFIER.

Application filed April 3,

To all whom it may concern Be it known that I, ARCHIE MARTIN. RAWLs, acitizen of the United States and resident of Dixon, in the county of Leeand State of Illinois, have invented'certain new and useful Improvementsin Alcohol- Flame Intensifiers, of which the following is aspecification. I x g i My invention relates to a burner adapted to beused in connection with a can of solid alcohol or similar fuel which iscommonly copdsumed in the receptacle in which it is so Y i i An objectofmy invention is to produce a burner which may be placed on the top ofthe open can and will greatly intensify the flame and result in anincreased production of heat. M Another object of the invention is theprovision of such a burner that will be simple and cheap in itsmanufacture but eflicient in operation. j Another object is theprovision of novel means for holding the parts of the burner in properposition while permitting thesame to be readily assembled and handled asa unit.

Other objects following ed claims.

In the drawings: 3 1 Figure 1 is a perspective view of the burner inoperative position.

Figure 2 is a vertical sectionlthrough the will be'apparent from thedetail description and the appendburner.- I

Figure 3 is a horizontal section on theline 3-3 of Fig.2. v I I Figure 4is a view of parts of the burner separated but'indicating the means ofassembling the parts; i i

In Figure'l is'shown thecan A of solid alcohol or similar fuel, theusualitripod-B supportinga Container C which is to be heated, and theburner D inoperative position. U

The burner'is formed of anouter frustro conical sheet metal shell 1, anda series of cylindrical perforated sheet metal shells 2, 3 and 4. Theseare placed within the frustro-conical shell 1 and spaced therefrom andfrom each other as shown. An inverted cone 5 of imperforatesheet metalis placed with its apex within the top of the cylinder 4, and this conecloses the top of this cylinder and acts as a flame spreader.

The outer sheet metal frustrQ-comca].

1922, Serial no. 549,042.",

m mb r 1; has a cutout 6 ate ehg fiadi jacent the bottom; andabouthalfway be; I I tween; the top and bottom several-spaced v openings Thecut outs 6' and the open? lngs 7 provide the necessary supply cra to theburner. p The frustro-conical member/1 and the cylindrical members2; 3and! are allassembled.

cept for a short distance at its center." The two parts are now foldedtogetherjwith' the uncut portion acting as a hinge. The outer ends arethenbent outward and theidevice.

takes the formshown i'n F'igure 4 {and des} ignated as a whole by thereference-character E. The device isseen .to resemble-two bowed strips9'and 10 back to' which .are joined atthei'r centersiffl' a As bestillustrated *infFigure 2",; these devices E are used to fasten together{adjacent cylinders 41: and 3; 3 and 2; and the cylinder 2 with thefrustro-conical n lembel" 1 in the following fashion.

For examp e i. the 1 strip that is placed-between the cylinders. 3

and'2 has the top and bottom of the strip 10 bent overthe edges 'of thecylinder '3 while the top and bottom of the strip .9 is

bent over the edges of the cylinder 2. Preferably fouroffthesedevices-are usedqbe tweeneach two cylinders, and it will be.seen that they not only hold; the cylinders to gether but spacethemlp'roperly and-je'venly from each other; The strips placed betweenthe differentpairs of cylinders are pref I. erably staggeredi." i

The cone 5'is'held in upon the' outside of the cylinder" 4, thus pa apbsitibnby a wire which passes throughfithe, conej,5" I I near itsapexland hasits lower ends bent" drawing down the cone firmlyyagainstthe top of the "cylinder The devi eis pro.-

vided with. a handle 12] of'any desired i char acterf y f f Theouteri'cylinder 2 is nearlyin contact with the frustro-conical member 1at the top, but is spaced considerably therefrom at the bottom, and thecylinders 2,.3 and'A are about equidistantly spaced. The cylinders 3 and4 are somewhat shorterthan the cyl- 'inder 2 and member 1, and the topsthereof are lower than the tops of the cylinder 2 and member 1.; Thecone. 5 has its upper-- The -,;ope ration of the device will be clearfromfthe foregoing description. An ordinary can of solid alcohol orcanned heat is used, the top removed, and the alcohol lighted. Thedevice is then placed immediately upon the top of the can. The flameWill pass up between the various cylinders forming substantiallycomplete: cone of flame. The combustion Will be better than if;thealcohol is merely burned in the can.

and a much hotter blaze Will be. obtained.

The article to be heated may be placed .di-

rectly upon the top of the burner, although it is preferable to supportit by tripod or similar means slightly. above the top of the burner asshown in Figure 1.

All of-the parts are preferably made of sheet metal of rather lightWeight for the sake of simplicity of manufacture and lower 'osts. I Thedevice is not necessarily limited to this material. Furthermore,although I have shown and described ,my preferred form .offastening thecylinders together,

it is obvious that other means might be employedlwithout affecting theoperation of the device. The size of the device may be varied, anddifferent sizes of cones 5 may I besubstituted;iffound advisable, andthis cone may in somecases extend above the top pf the outer cylinder,-Other obvious modiflcatlons illoccur'to any one skilled m-the art, andis understood that theinventionis limiteclomy by thescope of theappended laims.

meta-l, members tive relation toeach other.

LA burner for-fuel receptacles I claim as] my invention:

I having an open top .comprising an outer sheet metal frustro-conical:member, three cylindrical perforated sheet metal members concentricallyarranged Within the outer member,-

3. A burner for fuel receptacles having an open top comprising an outersheet metal member, a plurality of perforated sheet metal membersarranged Within the outer member all of said members being open at thebottom, a flame spreader at the top of the inner member, air admissionopenings in the outer member, and means for holding the parts inoperative relation to each other.

4. An alcohol burner-comprising an outer frustro-conical sheet metalmember, a plurality of concentric perforated sheet metal combustiontubes Withinsaid member, an inverted conical flame spreader havingitsapexwithin and closing the top of the inner cylindrical member, meansfor holding the members in operative relation, and means for admittingair through the outer member.

5. The combination With an open top fuel receptacle of a burner adaptedto be placed on the top thereof and comprising an outer sheet metalmember, a plurality of, perforated combustion tubes Within the outermember said tubes being open at the bot tom, a flame spreader at the topof the inner combustion tube,"and means for holding the members inoperative relation to each other.

6. The combination With an open top fuel receptacle of a burner adaptedto be placed on the top thereof andcomprising an outer sheet metalmember, aplurality of concentric perforated combustion tubes Within saidmember,.-an inverted conical flame spreader closing the top of the innercombustion tube, and means for holding" the members in operativerelation to each other.

7. The combination'with an open top fue receptacle of a burner. adaptedto be placed on the top thereof and comprising an outer sheet metalmember, a plurality of'c-ylindrical perforated combustion tubes-Withinsaid member,a flame spreader closing the top of the inner combustiontube, means for admitting air through the outer member, and means forholding. the members in erative relation to each other.

. '8. A fastening device forconcentriocombustion tubes comprlsing twobowed metal strips back to back and connected byan integral part, theends being adapted to be bent over the edges-of the tubes; 6

In: testimony subscribed my name.

ARCHIE MARTIN RAWLsQ hereof, I havehereunto

